diff --git a/install/usr/share/swarmlab.io/sec/setup.sh b/install/usr/share/swarmlab.io/sec/setup.sh
index e0951ba..edc6719 100755
--- a/install/usr/share/swarmlab.io/sec/setup.sh
+++ b/install/usr/share/swarmlab.io/sec/setup.sh
@@ -25,7 +25,7 @@ retry() {
 }
 
 echo "==> Install system packages"
-apk --no-cache add \
+/sbin/apk --no-cache add \
   bash \
   ghostscript \
   gnupg \
@@ -41,7 +41,7 @@ apk --no-cache add \
 
 
 # Dependencies needed by latexindent
-apk --no-cache add \
+/sbin/apk --no-cache add \
   perl-log-dispatch \
   perl-log-log4perl \
   perl-namespace-autoclean \
@@ -49,13 +49,13 @@ apk --no-cache add \
   perl-specio \
   perl-unicode-linebreak \
   perl-yaml-tiny
-apk --no-cache \
+/sbin/apk --no-cache \
   --repository=http://dl-cdn.alpinelinux.org/alpine/edge/testing \
   add \
   perl-file-homedir
 
-apk update --no-cache
-apk upgrade --no-cache
+/sbin/apk update --no-cache
+/sbin/apk upgrade --no-cache
 
 #gpg --keyserver hkp://pool.sks-keyservers.net --recv-keys 0D5E5D9106BAB6BC
 
@@ -149,7 +149,7 @@ fi
 
   cp /usr/local/texlive/2020/texmf-var/fonts/conf/texlive-fontconfig.conf /etc/fonts/conf.d/09-texlive.conf
 
-  apk add --no-cache msttcorefonts-installer 
+  /sbin/apk add --no-cache msttcorefonts-installer 
 
   update-ms-fonts 
   
diff --git a/setup.sh b/setup.sh
index e0951ba..edc6719 100755
--- a/setup.sh
+++ b/setup.sh
@@ -25,7 +25,7 @@ retry() {
 }
 
 echo "==> Install system packages"
-apk --no-cache add \
+/sbin/apk --no-cache add \
   bash \
   ghostscript \
   gnupg \
@@ -41,7 +41,7 @@ apk --no-cache add \
 
 
 # Dependencies needed by latexindent
-apk --no-cache add \
+/sbin/apk --no-cache add \
   perl-log-dispatch \
   perl-log-log4perl \
   perl-namespace-autoclean \
@@ -49,13 +49,13 @@ apk --no-cache add \
   perl-specio \
   perl-unicode-linebreak \
   perl-yaml-tiny
-apk --no-cache \
+/sbin/apk --no-cache \
   --repository=http://dl-cdn.alpinelinux.org/alpine/edge/testing \
   add \
   perl-file-homedir
 
-apk update --no-cache
-apk upgrade --no-cache
+/sbin/apk update --no-cache
+/sbin/apk upgrade --no-cache
 
 #gpg --keyserver hkp://pool.sks-keyservers.net --recv-keys 0D5E5D9106BAB6BC
 
@@ -149,7 +149,7 @@ fi
 
   cp /usr/local/texlive/2020/texmf-var/fonts/conf/texlive-fontconfig.conf /etc/fonts/conf.d/09-texlive.conf
 
-  apk add --no-cache msttcorefonts-installer 
+  /sbin/apk add --no-cache msttcorefonts-installer 
 
   update-ms-fonts